The problem with oscillating spindle sanders (OSS) is that they run in two price categories: 1)around $200 with ridgid judged the best because it also can be used as a belt sander and 2)in the $1,000 - 1,500 range for a precision machine. The main difference is how much you have to fuss to keep a given angle. Many of the $200 wonders will tilt, but you better test that angle often because it tends to slip after a few minutes of use.
With my limited budget, I have the Ridgid. I need to get a dead square 90 degree angle, which means fooling with the thing every few minutes or tossing bad runs. It just isn't made to keep its calibration. I see the "belt sander" as a gimmick. Sort of "nice to have if I were stranded on a desert island", but not something worth fooling with for real precision work.
I have used high end industrial OSS's and they keep their settings, have large tables for stability, but they cost 10x what the ridgid does. Sigh......
I have yet to see an OSS with great dust collection, so I won't fault the rigid for that.
If I had to buy again, I would probably put a paper bag over my head and get another ridgid.